#include<bits/stdc++.h>
using namespace std;
const int N=100010;
int n,ans;
int a[N];
int main(){
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    scanf("%d",&n);
    for(int i=1;i<=n;i++){
        int ri;
        scanf("%d",&ri);
        a[ri]++;
        ans=max(ans,a[ri]);
    }
    printf("%d\n",ans);
    return 0;
}
